Four-pole magneto-generator



H. c. Mmmm;

Four; me M Aegeo mamma. APPLCATION FILED M4524, 19H.

atente' Oat. 18, 1921.

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no 2f.

mmc/mon man nec. 24,' 191.1.

Patented oaf.

18 2 snazrsfsureir z.y

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`the rotor is entren eieren ritieni orner..

HERMAN G. IJYELLER, 0F MILAUKEE, WISGNSEN.

FOUR-POLE MAGNETG-GENERATGR.

specification of Leners Patent.

Patented Get. 1S i Application filed December 24, 1917. Serial i'o. 208.7%.

vidini;A a forni oi' construction in which the number ot eiective sparks produced during each revolution ofthe magneto sliaittniay be multiplied and the Speed oi' rotation oorj respondingly reduced belor1 thatrequired for the ordinary tgenerator having n two pole; rotor, lsind keeping within standard di' niensione.

In many of the modern internal. Combustion engines,.the number of Cylinders is inul tiplied to n point where `the ordinary two pole ,magneto generittor is poorly adapted for .use as an. .ignition generator `for all oi the cylinders, extremely high Speed lbeing required. in my'improved generatonvtne number of sparks produced independent not only upon the speed, but upon the number of pairs olf induction segn'ients with which provided, said pairs of ments beingoffset und so arranged that the segments may overlap in the segments of an imaginary cylinder defined by the peripheral margins of the rotary inductor segments Without interfering with the development of magnet-ie gaps and periodic reversals oi' the magnetic flux through. the respective pairs ot' induetor Segments at the proper intervalle. niy invention Ytherefore, it is poesible to reverse the magnetic flux throunjh one the respective parie oi inductor segments in the saine manner es if 'the other pairs ot' poio pieces were not present in the seme rotor. The Strength or' in tensity oil the magnetic tieid 'for enoh set of.

induction Segmente ie equal or substantieliy equal to that oi e. two pole rotor. in the construction shown, the rotor provided with tour paired induction Segrinentsd arranged with those of one pair 2idvancf-d 90 f'epgrees with reference to those of the other pair, 'whereby four ignition sparire i tion.

can be produced with zn-h, revolution ot the shaft. Therefore 'it will not be necessary to revolve theshett-at more than halt' the sneed that would be required i'or a two pole rotor producingA the saune number of sparks. This eonstruetimi valso permits the use of' e. oontinuoue snuit instead of a Stub or divided shaft, as connnonly used. i In the drawings- .rigore l is a side elevation of e magneto generator embodying my invention, portions being broken' away in vertical Section to expose the rotor and the induction coil iocated between the legs of the stationair? magnet. u

Fig. 2 is a sectional View drawn on line Fig. 3 is :i perspective view of the rotor and pole pie-tres of the permanent magnet, and showing also the electronngnetie stetionary iindnotor. y

Figs. 4 and 5 are similar views on :i smelier scale illustrating; the rotor in two enooessive positions or" current z(generation.

:Like parts nre identified by the seine ref erence oneraet-ers throughout the' several views.

in the illust-rated embodiment of my invention, .l employ two permanent U shaped magnets, r1rand 2, mounted between noninagnetie end pieces il and 4 upon a Suitable base 5 which is also non-magnetic. The end members 3 and L tend buse 5 constitute the machine iii-orner The shaft S extends lonritudinally4 between the polar extremities of said magnets and is provided with bearings neer each end carried by caps 7 which Close the openings in the end plates or members ried. by one oit' the` cups 7' and may ne of anyordinary. construction The timing' mecha-A nism therefore requins no further descrip- Between the plates 3 and fi, shaft 8 is provided with e Set of nonniagnetie sleeves or cylinders il() and 1l, upon each of which ie mounted a. pair of inductor segments or eronate magnetic bridges i2 and 13, le and lo respectively. These are composed of soit iron or other magnetic: or rnegnetinable niaterial. Their inner Surfaces tit the :supportN ing sleeves or Cylinders to which these infesl m. mi

had 2A. "W

@if "che inner faces 'the wie gras@ l? and ing bag me poevgmmde' :mi and s @they p01@ comeced Rt Wh the nm' mpi-el @i the iimng mechanism. Tha branch line 28 "if-ms to the condenser 25 in accordance Wth @rnay pmcce.

fn F il, fake mmame is ustmted in n'ura seona no current being ganel'aied, sncafc-he Haes of magnetic Flux am lpemi-f ted io pass bstwen vih@ pois and l@ h'rouggfh h@ nducwr Segments 0E' brdg@ pscas 12 :md 13 at om@ e36. the, rxbm and ighroagh bric pisses L5, 'kh-e pol@ 24 lhe elcronmgmec @QM fafyamhesi, n th@ se shro'ngh Segmen m" brfge 141;. .'ui, the Cvhmd my'nion tha S'u in ik@ direction indicated by the www im. Fig'. E, cmlias im bridge peces'o the, posit-110m; in which hay are 'ndicazen Fig. Il, Whereapon lha Hna?, of 'ac will between puh-2S and 18 't-'xough bridge piece l., cme 20, amd brilg@ piace- 'he line-5 of fome hus nz'-ducad, thmwH-Gme 20, upa current in the 00H, bu@ the rovaton of shaft 8 v@ominuizfag7 h@ of the roo' again. reach g neutrali point after a mm eighth u'x of "the haft A further rata tion of a one-eighth revuuon brngs @he miam to be ps'lion' in which is mus-- tmd in Fig. 5 in which the magnetic flux path between pole pes 1'? and 18 will be stablished zhoughbrdge piece l/, the com 20 bridge piace l2., imi Wl be 'mated wat the ximgnef nes of m's ixqavsng which :the

den Spark.

Segmar, m'. bx'dge pieza 0f ier o1 av roamn., piv@ af structum in which the poles; of the 'p ma/mnt magnet are navet bridged 'by my .ndul'stm ai tima the magm iz crcut's breken by any gvw Het of ilxducors. V41 my cmxsuclbiO-n, bxfidging bfmve'n u J. piezoes l? mal l@ 0'2" the pernmmel@ magnet never 99mm,.fe-:izcgntflux-l .1n-ga briief netervz 0f nutlnllty midway between suc-ssv breaks in bhs magneti@ bmut, and smumnen'us ruvmfndlf; in this direction amn by the lines offozcf. En fac, any bridging that may Geom be'ween the p01@ pieces-17 :md 18 is entirely dependen'o upon' h@ vftica dimension or thick ness of these pole pieces, and Wuld not @w cu alff 1H in the construction Shown if their ower'pmons lwere cui; www. By mvunb ing the af 8 midway between ish@ poi@ lil pieces 17 and 18 with its axis arallelxto the asis about which the curve faces of these pole'pieces extend, and by providinga coil having a core adapted to establish a, iux travel ath alternately and in opposite di'rectieiis rom one of the induetormembers of a pair' to one or' the inductor inembers of the other pair, l am enabled to einploy a plurality or' pairs of rotary inductor members revolving' between permanent field magnets and to locate the segments of one pair in an advancedposition with reference to each other in the circle of revolution, I thereby produce a reversal of the magnetic linx through the core of the coil as many n timesr'during a single yrevolution as there are `pairs of inductor segments which can be brought into position for coperation with the core, pieceof tlie-coil `to establish apatli for the magnetic lines vof force from one pole of the permanent magnet to the ether, at a' time when the shorter paths are interrupted by a magnetic gr While l liaYe shown and described the segmentalor arcuate inductor members as y arranged in pairs74 and While f`prefer to so arrange' them,el in order that the inductor, as illustrated, may' reverse the magnetic iux #tour times during eachg revolution of the .siiaftg yet ylegio not' limit the scope of my inventionytoa structure in which theseseg ments are paired. galso do not limit inyself to any specific' number of segments While I have referred to the armature, illns@ ti-ated in the drawings, as a rotor, it will, of course, be understood that it 1s not essential that the rotor 'should perform complete ing coil, a core and pole pieces for said coil,v

a rotor mounted'between said first inen-`f tioned `pole pieces andhaving its axis extending longitudinally thereof, said rotor comprising a pair of spaced arcuate induetors at each end and adapted to magneti cally link said first and second mentioned pole pieces toalternate tlie direction of mag-- netic flux through said generating coil, said arcuate inductor members arranged Jto completely bridge said lirst mentioned pole pieces immediately following each change of linx through said generating coil.

In testimony whereof' l aiiix my signature in the presence oftwo witnesses.

' HERMAN C. Montres.

Witnesses Lnviinn'ri VVHEELER, FREDERICK-W. NoiJrE. 

